Dry cleaning is ideal for expensive clothes or those that require a lot of effort to be washed. It can work well with a machine and there are certain chemicals that are used to clean the clothes. The solvents that are used to remove any kind of stain or dusts are either used prior to the wash or during the wash, depending on the fabric used. Dry cleaning does not involve the use of water since many fabrics do not respond well with water and tart losing their color. Tetrachloroethylene, more commonly known as perchloroethylene is the chemical used in the process.